Screw holes incorrect sizes
The holes on the moving platform which should be M3 clearance are hexagonal with a size of 3*1.15mm, the inscribed circle is 2.99mm. Even a close fit M3 clearance is specced as 3.2mm. This is causing a number of stages to self-tap both the platform and the xyz-table, leaving the platform raised or wobbly. This can be fixed with a drill or a knife but would be best to increase the size of $fn in openscad.